WINSLOW "B"

Oil · District 08 · Lease #40671

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

131k BBL

Cum Gas

367k MCF

casinghead

Wells

4

Production

2010-11 — 2025-10

Peak Month

2013-10

Production History

Cum Oil: 131,013 BBL Cum Gas: 367,237 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,988 BBL/mo

Di (annual)

45.8%

b-factor

0.3

EUR

111,034 BBL

R-squared

0.911

type

hyperbolic

Operator History (from monthly production reports)

2010-11 — 2026-07 PIONEER NATURAL RES. USA, INC. 189 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5PIONEER NATURAL RES. USA INC.111,3002013-01-22
4PIONEER NATURAL RES. USA INC.111,3002012-05-08
3DPIONEER NATURAL RES. USA INC.14,9502012-03-23
2PIONEER NATURAL RES. USA INC.210,5002009-01-30